/*
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* Copyright (C) 2013 CERN (www.cern.ch)
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* Author: Alessandro Rubini <rubini@gnudd.com>
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*
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* Released according to the GNU GPL, version 2 or any later version.
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*
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* This work is part of the White Rabbit project, a research effort led
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* by CERN, the European Institute for Nuclear Research.
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*/
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#include <linux/kernel.h>
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#include <linux/moduleparam.h>
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#include <linux/device.h>
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#include <linux/fmc.h>
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#include <linux/fmc-sdb.h>
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static int fmc_must_dump_eeprom;
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module_param_named(dump_eeprom, fmc_must_dump_eeprom, int, 0644);
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static int fmc_must_dump_sdb;
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module_param_named(dump_sdb, fmc_must_dump_sdb, int, 0644);
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#define LINELEN 16
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/* Dumping 8k takes oh so much: avoid duplicate lines */
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static const uint8_t *dump_line(int addr, const uint8_t *line,
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const uint8_t *prev)
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{
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int i;
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if (!prev || memcmp(line, prev, LINELEN)) {
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pr_info("%04x: ", addr);
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for (i = 0; i < LINELEN; ) {
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printk(KERN_CONT "%02x", line[i]);
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i++;
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printk(i & 3 ? " " : i & (LINELEN - 1) ? " " : "\n");
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}
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return line;
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}
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/* repeated line */
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if (line == prev + LINELEN)
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pr_info("[...]\n");
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return prev;
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}
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void fmc_dump_eeprom(const struct fmc_device *fmc)
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{
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const uint8_t *line, *prev;
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int i;
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if (!fmc_must_dump_eeprom)
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return;
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pr_info("FMC: %s (%s), slot %i, device %s\n", dev_name(fmc->hwdev),
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fmc->carrier_name, fmc->slot_id, dev_name(&fmc->dev));
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pr_info("FMC: dumping eeprom 0x%x (%i) bytes\n", fmc->eeprom_len,
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fmc->eeprom_len);
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line = fmc->eeprom;
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prev = NULL;
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for (i = 0; i < fmc->eeprom_len; i += LINELEN, line += LINELEN)
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prev = dump_line(i, line, prev);
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}
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void fmc_dump_sdb(const struct fmc_device *fmc)
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{
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const uint8_t *line, *prev;
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int i, len;
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if (!fmc->sdb)
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return;
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if (!fmc_must_dump_sdb)
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return;
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/* If the argument is not-zero, do simple dump (== show) */
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if (fmc_must_dump_sdb > 0)
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fmc_show_sdb_tree(fmc);
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if (fmc_must_dump_sdb == 1)
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return;
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/* If bigger than 1, dump it seriously, to help debugging */
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/*
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* Here we should really use libsdbfs (which is designed to
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* work in kernel space as well) , but it doesn't support
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* directories yet, and it requires better intergration (it
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* should be used instead of fmc-specific code).
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*
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* So, lazily, just dump the top-level array
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*/
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pr_info("FMC: %s (%s), slot %i, device %s\n", dev_name(fmc->hwdev),
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fmc->carrier_name, fmc->slot_id, dev_name(&fmc->dev));
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pr_info("FMC: poor dump of sdb first level:\n");
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len = fmc->sdb->len * sizeof(union sdb_record);
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line = (void *)fmc->sdb->record;
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prev = NULL;
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for (i = 0; i < len; i += LINELEN, line += LINELEN)
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prev = dump_line(i, line, prev);
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return;
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}
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